<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <script src="./js/vue.js"></script>
    <title>Document</title>
</head>
<body>
    <!-- 
     插值:{{}}
     原样输出,不会解析html等代码;

     v-html:
     解析html等代码
     -->
    <div id="app">
        <p>
            {{message}}
        </p>
        <p>
            {{2+3*5}}
        </p>
        <p v-html="message">

        </p>
     <p v-bind:title='message'>v-bind</p>

    </div>
 {{message}}
    <script>
        var app = new Vue({
        el: "#app",
            data: {
           message:"<b> this is a message </b>"
             }
                })

    </script>
</body>
</html>